Answer
$a) f(1.2)=int [(2)(1.2)]=int (2.4)=2 \\ b) f(1.6)=int [(2)(1.6)]=int (3.2)=3 \\ c) f(-1.8)=(2)(-1.8)=int(-3.6)=-4 $
Work Step by Step
We are given:
$f(x)=int(2x)$
Note that the notation $int (x)$ means: the largest integer that is less than or equal to $x$.
We simplify the given equation by substituting the $x$ values into the equation.
$a) f(1.2)=int [(2)(1.2)]=int (2.4)=2 \\ b) f(1.6)=int [(2)(1.6)]=int (3.2)=3 \\ c) f(-1.8)=(2)(-1.8)=int(-3.6)=-4 $
